Efficient filtering equipment of movable sewage suction truck for site construction

Abstract

The utility model relates to efficient filtering equipment of a movable sewage suction truck for site construction. The efficient filtering equipment mainly comprises a sewage tank, a separation tank and a sewage pump, the interior of the separation box is ingeniously divided into a solid temporary storage cavity and a liquid temporary storage cavity through a filter screen. In practical application, sewage enters through the liquid inlet pipeline at the upper part of the separation tank, solid impurities are intercepted by the filter screen in the falling process of the sewage, and liquid is conveyed to the sewage tank by the sewage pump. Compared with the prior art, two layers of filter screens are arranged in the separation box in parallel, one end of the filter screen I is fixedly connected with the separation box, the filter screen II is rotationally connected with the inner wall of the separation box, and a driving mechanism is arranged. The distance between the filter screen II and the filter screen I can be adjusted by driving the filter screen II to rotate, so that impact force is applied to the filter screen I, and solid impurities are promoted to fall into the solid temporary storage cavity. According to the design, the problem that the filter screen is blocked is effectively solved, the filtering efficiency and the stability of the device are improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment devices, and in particular to a high-efficiency filtration device for mobile vacuum trucks used in on-site construction. Background Technology

[0002] In the field of wastewater treatment, the separation of solid impurities from liquids is a crucial step. Existing wastewater separation devices typically include a wastewater tank and a separation tank mounted on top of the wastewater tank, and are equipped with a wastewater pump to transport the separated liquid from the separation tank to the wastewater tank.

[0003] Traditional separators typically have an internal filter screen that divides the chamber into a solid storage chamber and a liquid storage chamber. Wastewater and solid impurities enter the solid storage chamber through the inlet pipe, impacting the filter screen. The solid impurities are trapped within the solid storage chamber, while the liquid passes through the filter screen into the liquid storage chamber, from where it is pumped to the wastewater tank. Simultaneously, to control the discharge of solid impurities, a valve is usually connected to the outlet pipe at the bottom of the separator for control of its opening and closing.

[0004] However, existing devices of this type have certain limitations. During actual operation, the filter screen is easily clogged by solid impurities, affecting the filtration efficiency and separation effect of wastewater. Large solid particles, especially stones and concrete blocks, are particularly prone to becoming embedded in the filter screen gaps and are difficult to remove naturally. Filter screen clogging worsens with use, reducing the device's processing capacity and requiring frequent manual cleaning and maintenance, thus increasing operating costs and labor intensity. Furthermore, the existing filter screen structure and installation methods are ineffective in solving the problem of solid impurity clogging, affecting the stability and reliability of the device. Therefore, it is necessary to improve and innovate existing wastewater separation devices to enhance their filtration efficiency and anti-clogging capabilities. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention proposes a high-efficiency filtration device for mobile vacuum trucks used in on-site construction. This device prevents solid impurities from clogging the filter screen, thus ensuring filtration efficiency. This design effectively solves the problem of filter pore clogging in existing devices when used in areas with high solid impurity content, thereby avoiding drawbacks that affect filtration rate and operational efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mobile vacuum truck for on-site construction uses a high-efficiency filtration system, comprising a wastewater tank, a separation chamber mounted on the upper side of the wastewater tank, and a wastewater pump fixedly connected to the upper side of the wastewater tank. The inlet of the wastewater pump is connected to the separation chamber, and the outlet of the wastewater pump is connected to the wastewater tank. A filter screen is installed inside the separation chamber, dividing its interior into a solid storage chamber and a liquid storage chamber by the filter screen. The inlet of the wastewater pump is directly connected to the liquid storage chamber, and the upper and lower sides of the separation chamber are respectively connected to… It has an inlet pipe and an outlet pipe, both of which are directly connected to the solid storage chamber. There are two filters, with filter I being closer to the solid storage chamber and filter II being closer to the liquid storage chamber. Filter I is fixedly connected to the separation box on one side, and filter II is rotatably connected to the inner wall of the separation box. A driving mechanism is provided on one side of filter II, and when filter II abuts against filter I, the end of filter II closest to filter I is completely in contact with filter I.

[0008] Preferably, filter screen II is located on the side of filter screen I near the liquid storage chamber, the lower end of filter screen II is rotatably connected to the inner wall of the separation tank, and the filter screen is inclined, with the distance between the upper end of the filter screen and the sewage pump being greater than the distance between its lower end and the sewage pump.

[0009] Preferably, the driving mechanism includes a rectangular frame, the side of the rectangular frame away from the filter screen is rotatably connected to the inner wall of the separation box, a pull rope is fixedly connected to the side of the rectangular frame near the filter screen, the other end of the pull rope is fixedly connected to the filter screen II, and a contact wire is fixedly connected inside the rectangular frame.

[0010] Preferably, the contact network includes multiple flexible ropes, which are woven together in a crisscross pattern.

[0011] Preferably, a tension spring is provided on the side of filter screen II away from filter screen I, and the two axial ends of the tension spring are movably connected to the inner wall of the separation box and filter screen II, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features two side-by-side filters arranged within a separation chamber. Filter I, located near the solid storage chamber, is fixedly connected to the separation chamber, while filter II, located near the liquid storage chamber, is rotatably connected to the inner wall of the separation chamber and has a driving mechanism on one side. By rotating filter II through the driving mechanism, the distance between it and filter I can be changed. Filter II impacts filter I, causing solid impurities stuck on filter I to fall into the solid storage chamber, effectively solving the filter clogging problem. This not only improves the filtration efficiency and separation effect of the device but also significantly reduces the frequency and cost of manual cleaning and maintenance, further enhancing the stability and reliability of the device's operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram showing the connection between the separation box and the sewage pump of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the separation box of this utility model.

[0017] Figure 4 This is a schematic diagram showing the relationship between the filter screen and the pull rope spring in this practical application.

[0018] In the diagram: 1. Sewage tank; 2. Sewage pump; 3. Separation tank; 301. Liquid storage tank; 302. Solid storage tank; 4. Filter screen; 401. Filter screen II; 402. Filter screen I; 5. Drive mechanism; 501. Pull rope; 502. Rectangular frame; 503. Contact wire; 6. Liquid inlet pipe; 7. Discharge pipe; 8. Tension spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Please refer to Figure 1 , Figure 2 A mobile vacuum truck for on-site construction with high-efficiency filtration equipment is consistent with existing technology. The device includes a sewage tank 1 and a separation tank 3 set on the upper side of the sewage tank 1. A sewage pump 2 is also fixedly connected to the upper side of the sewage tank 1. The inlet of the sewage pump 2 is connected to the separation tank 3, and the outlet is connected to the sewage tank 1.

[0022] The device also has a filter screen 4 inside the separation chamber 3. The presence of the filter screen 4 divides the inner cavity of the separation chamber 3 into a solid temporary storage chamber 302 and a liquid temporary storage chamber 301.

[0023] It is worth noting that, such as Figure 1 As shown, the filter screen 4 is inclined, and the upper side of the separation box 3 is connected to the liquid inlet pipe 6, while the lower side of the separation box 3 is connected to the discharge pipe 7. The discharge pipe 7 and the liquid inlet pipe 6 are directly connected to the solid separation chamber. This allows the wastewater and solid impurities (such as stones, concrete blocks, etc.) to enter the solid temporary storage chamber 302 of the separation box 3 through the liquid inlet pipe 6 and impact the filter screen 4. The solid impurities in the wastewater are intercepted by the filter screen 4 and remain in the solid temporary storage chamber 302, while the liquid enters the liquid temporary storage chamber 301 through the filter screen 4. Then, the wastewater pump 2 transports the liquid in the liquid temporary storage chamber 301 to the wastewater tank 1.

[0024] It is worth noting that, such as Figure 2 As shown, a valve body is connected to the lower side of the discharge pipe 7. The presence of the valve body can control the opening and closing of the discharge pipe 7, which can ensure that the sewage can be completely transferred by the sewage pump 2.

[0025] Please refer to Figure 1 , Figure 3 Unlike existing technology devices, this device has two filters 4 arranged side by side inside the separation box 3. Among the two filters 4, the one closer to the solid temporary storage chamber 302 is filter I 402, and its side end is fixedly connected to the separation box 3; the one closer to the liquid temporary storage chamber 301 is filter II 401, and filter II 401 is rotatably connected to the inner wall of the separation box 3.

[0026] It should be emphasized that, in order to prevent solid impurities from getting stuck, the side end of filter screen I 402 is fixedly connected to the separation box 3, while filter screen II 401 is rotatably connected to the inner wall of the separation box 3. This can be achieved by rotating filter screen II 401, changing the distance between filter screen II 401 and filter screen I 402, thereby using filter screen II 401 to create an impact effect on filter screen I 402, causing solid impurities to be knocked into the solid temporary storage chamber.

[0027] Specifically, in order to achieve smooth rotation of filter II 401, this device is specially equipped with a drive mechanism 5 on one side to drive it to complete the rotation process.

[0028] like Figure 3 As shown, in order to reduce the use of electrical components and better fit the on-site environment, the drive mechanism 5 used in this device includes a rectangular frame 502. One end of the rectangular frame 502 is rotatably connected to the inner wall of the separation box 3, and this end is away from the filter screen 4; while the other end is fixedly connected to a pull rope 501, and the other end of the pull rope 501 is firmly connected to the filter screen II 401.

[0029] In addition, a contact mesh 503 is fixedly connected to the inside of the rectangular frame 502. The contact mesh 503 is a mesh structure with multiple through holes. This can prevent solid impurities from being interfered with by the contact mesh 503 and thus prevent them from falling directly into the discharge pipe 7. It can also ensure that the solid impurities can continuously impact the contact mesh 503 during the falling process (in reality, the sewage will also continuously impact the contact mesh 503 during the falling process). This allows the contact mesh 503 and the rectangular frame 502 to rotate relative to the separation box 3. At this time, combined with the position of the pull rope 501, the filter screen II 401 can be pulled towards the filter screen I 402 during the rotation of the rectangular frame 502 (the rectangular frame 502 swings downward), thereby creating a striking effect on the filter screen I 402.

[0030] Furthermore, the constraint contact network 503 of this device is composed of multiple crisscrossing flexible ropes. This structure can fully withstand the impact of solid impurities, and its own flexible properties can fully prevent solid impurities from getting stuck in the gaps of the flexible ropes.

[0031] It is worth noting that in practice, the distribution of solid impurities is not uniform, which makes the impact force on filter screen II 401 not uniform and regular. This measure can effectively prevent solid impurities from getting stuck in filter screen I 402 by utilizing the continuously changing frequency.

[0032] It should be noted that, in reality, due to the lack of a power source, the rectangular frame 502 will rotate under the impact of sewage and solid impurities, causing filter screen II 401 to be unable to obtain sufficient force to move away from filter screen I 402.

[0033] Therefore, this device constrains filter screen II 401 to be located on the side of filter screen I 402 closer to the liquid storage chamber 301, and the lower end of filter screen II 401 is rotatably connected to the inner wall of the separation tank 3. Simultaneously, filter screen 4 is tilted, with the distance between the upper end of filter screen 4 and the sewage pump 2 greater than the distance between its lower end and the sewage pump 2. This tilted design allows filter screen II 401 to naturally move away from filter screen I 402 under the influence of gravity, thereby achieving automatic separation between filter screen II 401 and filter screen I 402.

[0034] Furthermore, to ensure that filter screen II 401 has a tendency to move away from filter screen I 402, this device also provides a tension spring 8 on the side of filter screen II 401 away from filter screen I 402. The two axial ends of the tension spring 8 are respectively movably connected to the inner wall of the separation tank 3 and filter screen II 401. Once the impact force of sewage and solid impurities weakens or disappears, the tension spring 8 will pull filter screen II 401 back to its initial position, making full preparation for the subsequent filtration and cleaning work.

[0035] In the actual application of this utility model, its workflow is as follows:

[0036] I. Wastewater introduction and pump start-up

[0037] Wastewater carrying solid impurities enters the separation tank 3 through the inlet pipe 6. The wastewater and solid impurities impact the top of the filter screen I 402 (at this time, the valve on the outlet pipe 7 is closed). At the same time, the wastewater pump 2 starts synchronously.

[0038] II. Preliminary Filtering Stage

[0039] Wastewater enters the liquid storage chamber 301 through the pores on filter screen I 402, while solid impurities are trapped in the solid storage chamber 302. Filter screen I 402 is designed with pore sizes based on the size of the impurities, effectively intercepting large solid particles and initially purifying the wastewater.

[0040] III. Liquid Transport Process

[0041] Wastewater flows into separation tank 3 and is filtered by filter screen I 402. The liquid gradually accumulates in the temporary storage chamber. Since wastewater pump 2 has been started, its inlet is directly connected to the liquid temporary storage chamber 301. Wastewater pump 2 transports the liquid to wastewater tank 1 for storage.

[0042] IV. Operating Mechanism of Filter II 401

[0043] As wastewater and solid impurities flow downwards along filter screen I 402, they impact the contact mesh 503. During this process, the wastewater counteracts the spring tension, and the impact of solid impurities on the contact mesh 503 causes the rectangular frame 502 to rotate filter screen II 401 downwards, impacting filter screen I 402. Due to the characteristic that the end of filter screen II 401 closest to filter screen I 402 is completely in contact with it, filter screen II 401 can squeeze and scrape the solid impurities intercepted on filter screen I 402, helping to clean potentially clogged pores and thus improving filtration efficiency. Simultaneously, when wastewater impacts the contact mesh 503, the elasticity of the tension spring 8 causes filter screen II 401 to return to its initial position, and the rectangular frame 502 also resets, awaiting the next impact of solid impurities.

[0044] V. The process of removing solid impurities

[0045] After the sewage collection is completed, stop the sewage pump 2 and open the valve on the discharge pipe 7 to discharge the solid impurities accumulated in the solid storage chamber 302.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile vacuum truck high-efficiency filtration device for on-site construction, comprising a sewage tank (1), a separation box (3) provided on the upper side of the sewage tank (1), and a sewage pump (2) fixedly connected to the upper side of the sewage tank (1), the inlet of the sewage pump (2) being connected to the separation box (3), and the outlet of the sewage pump (2) being connected to the sewage tank (1), characterized in that: The separation box (3) is equipped with a filter screen (4). The inner cavity of the separation box (3) is divided into a solid temporary storage chamber (302) and a liquid temporary storage chamber (301) by the filter screen (4). The inlet of the sewage pump (2) is directly connected to the liquid temporary storage chamber (301). Furthermore, the upper and lower sides of the separation box (3) are respectively connected to an inlet pipe (6) and a outlet pipe (7). Both the inlet pipe (6) and the outlet pipe (7) are directly connected to the solid temporary storage chamber (302). There are two filters (4), of which the filter (4) closer to the solid storage chamber (302) is filter I (402) and the filter (4) closer to the liquid storage chamber (301) is filter II (401). The side end of filter I (402) is fixedly connected to the separation box (3), and filter II (401) is rotatably connected to the inner wall of the separation box (3). A drive mechanism (5) is provided on one side of the filter screen II (401), and when the filter screen II (401) abuts against the filter screen I (402), the end of the filter screen II (401) near the filter screen I (402) is completely attached to the filter screen I (402).

2. The high-efficiency filtration equipment for mobile vacuum trucks used in on-site construction as described in claim 1, characterized in that: The filter screen II (401) is located on the side of the filter screen I (402) near the liquid storage chamber (301). The lower end of the filter screen II (401) is rotatably connected to the inner wall of the separation box (3). Furthermore, the filter screen (4) is set at an angle, and the distance between the upper end of the filter screen (4) and the sewage pump (2) is greater than the distance between its lower end and the sewage pump (2).

3. The high-efficiency filtration equipment for mobile vacuum trucks used in on-site construction as described in claim 2, characterized in that: The drive mechanism (5) includes a rectangular frame (502), the side of the rectangular frame (502) away from the filter screen (4) is rotatably connected to the inner wall of the separation box (3), the side of the rectangular frame (502) close to the filter screen (4) is fixedly connected to a pull rope (501), the other end of the pull rope (501) is fixedly connected to the filter screen II (401), and a contact wire (503) is fixedly connected inside the rectangular frame (502).

4. The high-efficiency filtration equipment for mobile vacuum trucks used in on-site construction as described in claim 3, characterized in that: The contact wire (503) includes multiple flexible ropes, which are woven together by multiple intersecting flexible ropes.

5. The high-efficiency filtration equipment for mobile vacuum trucks used in on-site construction according to claim 2, characterized in that: A tension spring (8) is provided on the side of filter screen II (401) away from filter screen I (402). The two axial ends of the tension spring (8) are movably connected to the inner wall of the separation box (3) and filter screen II (401), respectively.

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